Chapter 4. Trouble Shooting - LG MX8550 Service Manual

MX8550
4.1 Rx Part Trouble
4.1.1 DCN Rx
Rx TEST SETUP (HHP)
- Test Channel: 384
- Test Band : US Cellular
- SID: 2004
- Sector Power: - 30 dB m Spectrum Analyzer Setting
Oscilloscope Setting
1. Check
DC Power Supply circuit
2. Check
VCTCXO
LG Electronics Inc.

CHAPTER 4. Trouble Shooting

CHAPTER 4. Trouble Shooting
Mobile S/W
DCN_Duplexer
VCTCXO
Start
Test Point
Test Point
Diplexer
RFR6500
Check flow
Check flow
3. Check
Control signal
4. Check
RF Signal path
NO
5. Check
Rx I/Q data
Redownload S /W, Cal
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